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Table Of Contents
You can review the boot media capacity and the automatic sizing as configured by the ESXi
installer by using the vSphere Client and navigating to the Partition Details view. Alternatively, you
can use ESXCLI, for example the esxcli storage filesystem list command.
Table 4-2. ESXi System Storage Sizes, Depending on the Used Boot Media and Its Capacity.
Boot Media Size 8-10 GB 10-32 GB 32-128 GB >128 GB
System Boot 100 MB 100 MB 100 MB 100 MB
Boot-bank 0 500 MB 1 GB 4 GB 4 GB
Boot-bank 1 500 MB 1 GB 4 GB 4 GB
ESX-OSData remaining space remaining space remaining space up to 128 GB
VMFS datastore remaining space for
media size > 142 GB
You can use the ESXi installer boot option systemMediaSize to limit the size of system storage
partitions on the boot media. If your system has a small footprint that does not require the
maximum of 128 GB of system storage size, you can limit it to the minimum of 32 GB. The
systemMediaSize parameter accepts the following values:
n min (32 GB, for single disk or embedded servers)
n small (64 GB, for servers with at least 512 GB of RAM)
n default (128 GB)
n max (consume all available space, for multi-terabyte servers)
The selected value must fit the purpose of your system. For example, a system with 1 TB of
memory must use the minimum of 64 GB for system storage. To set the boot option at install
time, for example systemMediaSize=small, refer to Enter Boot Options to Start an Installation or
Upgrade Script. For more information, see Knowledge Base article 81166.
ESXi System Storage Links
The sub-systems that require access to the ESXi partitions, access these partitions by using the
following symbolic links:
Table 4-3.
ESXi system storage symbolic links.
System Storage Volume Symbolic Link
Boot-bank 0
/bootbank
Boot-bank 1
/altbootbank
VMware ESXi Installation and Setup
VMware, Inc. 14